Crypto Service TISCI Description

This chapter provides information on System Firmware API for Cryptographic Services. The available API are listed below.

TISCI Message ID	Message Name	Available in GP	Available in HS-FS	Available in HS-SE	Previous Message Name
0x9040	TISCI_MSG_CRYPTO_AES_ENCRYPT	NO	YES	YES	TISCI_MSG_SA2UL_AES_ENCRYPT
0x9041	TISCI_MSG_CRYPTO_AES_DECRYPT	NO	YES	YES	TISCI_MSG_SA2UL_AES_DECRYPT

Note

The TISCI Message ID macros have been renamed. Please update your code to use the new names.

API Description

Request and Response structures

struct csp_aes_opn_req_data {
    u32 ctx_address_lo;
    u32 ctx_address_hi;
}

struct csp_aes_opn_resp_data {
    u8 tag[16];
}

TISCI_MSG_CRYPTO_AES_ENCRYPT - Encrypt a blob

Usage:

Message Type	Normal
Secure Queue Only?	Yes

TISCI Message ID

TISCI_MSG_CRYPTO_AES_ENCRYPT          (0x9040U)

Message to encrypt a blob

struct tisci_csp_aes_req

Request for encryption/decryption

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_req	struct csp_aes_opn_req_data	Structure containing context address

struct tisci_csp_aes_resp

Response of the encryption/decryption process

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_resp	struct csp_aes_opn_resp_data	Structure containing service response

TISCI_MSG_CRYPTO_AES_DECRYPT - Decrypt a blob

Usage:

Message Type	Normal
Secure Queue Only?	Yes

TISCI Message ID

TISCI_MSG_CRYPTO_AES_DECRYPT          (0x9041U)

Message to decrypt a blob

struct tisci_csp_aes_req

Request for encryption/decryption

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_req	struct csp_aes_opn_req_data	Structure containing context address

struct tisci_csp_aes_resp

Response of the encryption/decryption process

Parameter	Type	Description
hdr	struct tisci_header	tisci header
aes_resp	struct csp_aes_opn_resp_data	Structure containing service response